Answer:
x = 20 * s / 300
Step-by-step explanation:
In this case, it is solved by means of a rule of three, that is, we know that 20 of 300 answered yes, but in the case of the strata sample, since it is a value that is not mentioned in the problem, we will assume it as " s "and the people who were selected as" x ". would:
20 x
300 s
Therefore, x:
x = 20 * s / 300
and thus they would give us the number of people that would be selected.
For example, if "s" were 240, it would be:
x = 20 * 240/300
x = 16
that is, 16 people would be selected
Answer:
4x+(-3y)
Step-by-step explanation:
![\\ \rm\longmapsto 4x+(-3y)](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto%204x%2B%28-3y%29)
- (-)(-)=(+)
- (+)(-)=(-)
- (-)(+)=(-)
- (+)(+)=(+)
![\\ \rm\longmapsto 4x-3y](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto%204x-3y)
Answer:
28 white strands , 20 blue strands and 32 red strands are needed to make a pair of pom-poms
Step-by-step explanation:
Given :A pom-pom manufacturer makes each of its pom-poms with 35% white strands (w), 25% blue strands (b), and 40% red strands (r).
To Find : If each pom-pom has a total of 80 strands, how many of strands of each color are needed to make a pair of pom-poms?
Solution:
Total Strands = 80
White Strands = 35%
No. of white strands = ![35\% \times 80 =\frac{35}{100} \times 80 =28](https://tex.z-dn.net/?f=35%5C%25%20%5Ctimes%2080%20%3D%5Cfrac%7B35%7D%7B100%7D%20%5Ctimes%2080%20%3D28)
Blue Strands = 25%
No. of blue strands = ![25\% \times 80 =\frac{25}{100} \times 80 =20](https://tex.z-dn.net/?f=25%5C%25%20%5Ctimes%2080%20%3D%5Cfrac%7B25%7D%7B100%7D%20%5Ctimes%2080%20%3D20)
Red Strands = 40%
No. of Red strands = ![40\% \times 80 =\frac{40}{100} \times 80 =32](https://tex.z-dn.net/?f=40%5C%25%20%5Ctimes%2080%20%3D%5Cfrac%7B40%7D%7B100%7D%20%5Ctimes%2080%20%3D32)
Hence 28 white strands , 20 blue strands and 32 red strands are needed to make a pair of pom-poms
Area of rhombus = length x height = 6 x 4 = 24 units²
Answer: 24 units²
104 is the answer to your problem